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<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
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    <title>Document</title>
</head>
<body>
    <script>
        // 下划线  驼峰命名
        var movie_name = "你的名字";
        var movieName = "从你的全世界路过";
        // void abstract interface implement
        movieName = 10;
        console.log(movieName)
    </script>
</body>
</html>